Software Engineer
Propr is an onchain proprietary trading firm that funds traders across crypto, equity, commodity, and forex perpetuals, as well as prediction markets. Traders keep 80% of their profits and receive instant USDC payouts.
Funding history
Projects
About Propr
Propr provides funded trading accounts through evaluation challenges, allowing successful traders to access the firm's capital and retain 80% of profits. Its platform supports more than 150 markets, including Hyperliquid perpetuals and Polymarket prediction markets, with transparent execution, onchain USDC payouts, and no time limits. Propr also offers REST API, Python, and JavaScript SDK access for developers, AI agents, trading applications, and products integrating funded capital.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You design and implement backend services across the trading domain. You own features end to end including schema API tests and UI integration. You contribute to real time infrastructure and client facing APIs. You write integration tests against real dependencies.
Requirements
- 5+ years production backend experience.
- Strong TypeScript or other strongly typed language background.
- Experience with trading systems, financial infrastructure, or exchange adjacent domains.
- Distributed system and transaction knowledge.
- Modern Node.js backend framework (NestJS preferred; Spring / FastAPI / similar acceptable).
- SQL and a production ORM (preferably TypeORM).
- Arbitrary precision decimal arithmetic in financial contexts.
- Integration first testing discipline.
- Able to ship React / Next.js features to completion.
Responsibilities
- Design and implement backend services across the trading domain.
- Own features end to end including schema API tests and UI integration.
- Contribute to real time infrastructure and client facing APIs.
- Write integration tests against real dependencies.
Benefits
- Event sourcing experience.
- Crypto exchange experience.
- Direct experience with major exchange APIs REST and WebSocket.
- AWS ECS Aurora ElastiCache Terraform.
- Monorepo tooling Turborepo Nx.
- KYC compliance workflows.
- Crypto native.
